<SEC-DOCUMENT>0000943712-12-000002.txt : 20120124
<SEC-HEADER>0000943712-12-000002.hdr.sgml : 20120124
<ACCEPTANCE-DATETIME>20120123184535
ACCESSION NUMBER:		0000943712-12-000002
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20111231
FILED AS OF DATE:		20120124
DATE AS OF CHANGE:		20120123
EFFECTIVENESS DATE:		20120124

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WASHINGTON STATE INVESTMENT BOARD
		CENTRAL INDEX KEY:			0000943712
		IRS NUMBER:				911443137
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-14515
		FILM NUMBER:		12540454

	BUSINESS ADDRESS:	
		STREET 1:		2100 EVERGREEN PARK DR SW
		STREET 2:		PO BOX 40916
		CITY:			OLYMPIA
		STATE:			WA
		ZIP:			98504-0916
		BUSINESS PHONE:		3609564715

	MAIL ADDRESS:	
		STREET 1:		2100 EVERGREEN PARK DR SW
		STREET 2:		PO BOX 40916
		CITY:			OLYMPIA
		STATE:			WA
		ZIP:			98504-0916
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-HR
<SEQUENCE>1
<FILENAME>wsib13f.txt
<TEXT>
FORM 13F INFORMATION TABLE
                           TITLE         VALUE SHARE SHINVSVOTE AUTH
NAME OF ISSUER            OF CLAS CUSIP  X$1000PRN AMPRDSCR  NONE
ARCHER DANIEL MIDLAND       COM  03948310 3,899136338SHSole   X
BARRICK GOLD CORP COM       COM  06790110 3,59279372 SHSole   X
CAMECO CORP                 COM  13321L10 3,078170539SHSole   X
CF INDS HLDGS INC           COM  12526910 3,57824678 SHSole   X
CNOOC LTD SPONSORED ADR     COM  12613210 3,48519953 SHSole   X
CORN PRODUCTS INTERNATIONA  COM  21902310 4,76090513 SHSole   X
COSAN LTD CLASS A SHARES    COM  G2534310 3,655333443SHSole   X
EOG RESOURCES INC           COM  26875P10 4,34544104 SHSole   X
EXXON MOBIL CORP            COM  30231G10 4,81756827 SHSole   X
FREEPORT-MCMORAN COPPER &   COM  35671D85 3,40992649 SHSole   X
IMPERIAL OIL LTD            COM  45303896 4,34895800 SHSole   X
MONSANTO CO NEW COM         COM  61166W10 3,85354981 SHSole   X
OCCIDENTAL PETROLEUM        COM  67459910 4,17344539 SHSole   X
PEABODY ENERGY CORP COM ST  COM  70454910 3,22097258 SHSole   X
PETROLEO BRASILEIRO SA PET  COM  71654V10 3,529150255SHSole   X
POTASH CORP SASK INC        COM  73755L10 3,67789075 SHSole   X
SMITHFIELD FOODS INC COM S  COM  83224810 5,147211979SHSole   X
SOCIEDAD QUIMICA MINERA DE  COM  83363510 3,71368943 SHSole   X
SOUTHERN COPPER CORP DEL    COM  84265V10 3,995132360SHSole   X
SOUTHWESTERN ENERGY CO COM  COM  84546710 3,06395900 SHSole   X
STERLITE INDUSTRIES ADS EA  COM  85973720 2,840409869SHSole   X
SUNCOR ENERGY INC (NEW) NP  COM  86722410 3,710128686SHSole   X
TALISMAN ENERGY INC         COM  87425E10 3,747293876SHSole   X
TECK RESOURCES LTD CLASS B  COM  87874220 3,697105063SHSole   X
THE MOSAIC CO USD0.01 NEW   COM  61945C10 3,35966604 SHSole   X
VALE SA ADR REPR 1 PREF SH  COM  91912E20 3,436166778SHSole   X
WALTER INDUSTRIES INC COM   COM  93317Q10 3,18852637 SHSole   X
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>